VH400-SSE Vegetronix Soil Moisture Sensor with logger anticipator

Soil Moisture Sensor Probe - VH400-SSE
Properties:
-Low power
-Durable
-High accuracy
-Small size
-Insensitive to salt.

Note: VH400-SSE model is compatible with HOBO U12 loggers by using this SSE Electronics.
The VH400 has a narrow sensing range, and only senses in the immediate proximity, and so is insensitive to differences in the volume of the medium being measured.

If the probe is going to be buried or if the probe is going to be used to measure pots of differing volumes then the VH400-SSE should be used.

Use the VH400-SSE soil moisture sensors in soils where the soil will have higher water saturation.
Use the VH400-SSE where you need an absolute moisture measurement that is independent of volume, as in the case of measuring moisture in potted plants.

See Video: Soil Moisture Sensor as Water Level Sensor

The Techno Gardener demonstrates how a Vegetronix soil moisture sensor can be used as a water level sensor.